7RIP

RNA polymerase II elongation complex with hairpin polyamide Py-Im 1, scaffold 1 soaked with CTP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.219 
  • R-Value Observed: 0.220 

Starting Model: experimental
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This is version 1.2 of the entry. See complete history


Literature

RNA polymerase II trapped on a molecular treadmill: Structural basis of persistent transcriptional arrest by a minor groove DNA binder.

Oh, J.Jia, T.Xu, J.Chong, J.Dervan, P.B.Wang, D.

(2022) Proc Natl Acad Sci U S A 119

  • DOI: https://doi.org/10.1073/pnas.2114065119
  • Primary Citation of Related Structures:  
    7RIL, 7RIM, 7RIP, 7RIQ, 7RIW, 7RIX, 7RIY

  • PubMed Abstract: 

    Elongating RNA polymerase II (Pol II) can be paused or arrested by a variety of obstacles. These obstacles include DNA lesions, DNA-binding proteins, and small molecules. Hairpin pyrrole-imidazole (Py-Im) polyamides bind to the minor groove of DNA in a sequence-specific manner and induce strong transcriptional arrest. Remarkably, this Py-Im-induced Pol II transcriptional arrest is persistent and cannot be rescued by transcription factor TFIIS. In contrast, TFIIS can effectively rescue the transcriptional arrest induced by a nucleosome barrier. The structural basis of Py-Im-induced transcriptional arrest and why TFIIS cannot rescue this arrest remain elusive. Here we determined the X-ray crystal structures of four distinct Pol II elongation complexes (Pol II ECs) in complex with hairpin Py-Im polyamides as well as of the hairpin Py-Im polyamides-dsDNA complex. We observed that the Py-Im oligomer directly interacts with RNA Pol II residues, introduces compression of the downstream DNA duplex, prevents Pol II forward translocation, and induces Pol II backtracking. These results, together with biochemical studies, provide structural insight into the molecular mechanism by which Py-Im blocks transcription. Our structural study reveals why TFIIS fails to promote Pol II bypass of Py-Im-induced transcriptional arrest.


  • Organizational Affiliation

    Division of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA 92093.


Macromolecules

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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerase II subunit RPB1D [auth A]1,733Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 2.7.7.6
UniProt
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerase II subunit RPB2E [auth B]1,224Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 2.7.7.6
UniProt
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Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerase II subunit RPB3F [auth C]318Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerases I, II, and III subunit RPABC1G [auth E]215Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 8
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerases I, II, and III subunit RPABC2H [auth F]155Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 9
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerases I, II, and III subunit RPABC3I [auth H]146Saccharomyces cerevisiae S288CMutation(s): 0 
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Entity ID: 10
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerase II subunit RPB9J [auth I]122Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 11
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerases I, II, and III subunit RPABC5K [auth J]70Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 12
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerase II subunit RPB11L [auth K]120Saccharomyces cerevisiae S288CMutation(s): 0 
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Entity ID: 13
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerases I, II, and III subunit RPABC4M [auth L]70Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 1
MoleculeChains LengthOrganismImage
RNAA [auth R]10synthetic construct
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Entity ID: 2
MoleculeChains LengthOrganismImage
Template strand DNAB [auth T]30synthetic construct
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Entity ID: 3
MoleculeChains LengthOrganismImage
Non-template strand DNAC [auth N]20synthetic construct
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Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
5N0 (Subject of Investigation/LOI)
Query on 5N0

Download Ideal Coordinates CCD File 
O [auth T]3-({3-[(3-{[4-({4-[(4-{[4-({(2R)-2-amino-4-[(1-methyl-4-{[1-methyl-4-({1-methyl-4-[(1-methyl-1H-imidazole-2-carbonyl)amino]-1H-imidazole-2-carbonyl}amino)-1H-pyrrole-2-carbonyl]amino}-1H-pyrrole-2-carbonyl)amino]butanoyl}amino)-1-methyl-1H-imidazole-2-carbonyl]amino}-1-methyl-1H-pyrrole-2-carbonyl)amino]-1-methyl-1H-pyrrole-2-carbonyl}amino)-1-methyl-1H-pyrrole-2-carbonyl]amino}propyl)(methyl)amino]propyl}carbamoyl)benzoic acid
C64 H75 N23 O12
WKPGYYXGKHNOLO-VZUYHUTRSA-N
PPV
Query on PPV

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R [auth B]PYROPHOSPHATE
H4 O7 P2
XPPKVPWEQAFLFU-UHFFFAOYSA-N
ZN
Query on ZN

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P [auth A]
Q [auth A]
S [auth B]
T [auth C]
U [auth I]
P [auth A],
Q [auth A],
S [auth B],
T [auth C],
U [auth I],
V [auth I],
W [auth J],
X [auth L]
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
MG
Query on MG

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N [auth R]MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.219 
  • R-Value Observed: 0.220 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 168.158α = 90
b = 223.041β = 100.67
c = 193.464γ = 90
Software Package:
Software NamePurpose
Aimlessdata scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesGM102362

Revision History  (Full details and data files)

  • Version 1.0: 2022-01-12
    Type: Initial release
  • Version 1.1: 2022-07-27
    Changes: Database references
  • Version 1.2: 2023-10-18
    Changes: Data collection, Refinement description